F04D 29/023
Especially adapted for elastic fluid pumps
Official title: {especially adapted for elastic fluid pumps}
F04D29/023 (Especially adapted for elastic fluid pumps) appears on 1,322 US grants and 1,653 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,322
- Published applications
- 1,653
- Assignees
- 543
- Inventors
- 3,274
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 11 | 0 |
| 1996 | 5 | 0 |
| 1997 | 11 | 0 |
| 1998 | 15 | 0 |
| 1999 | 14 | 0 |
| 2000 | 18 | 0 |
| 2001 | 21 | 5 |
| 2002 | 19 | 15 |
| 2003 | 21 | 21 |
| 2004 | 17 | 32 |
| 2005 | 15 | 28 |
| 2006 | 19 | 30 |
| 2007 | 19 | 35 |
| 2008 | 17 | 41 |
| 2009 | 20 | 41 |
| 2010 | 24 | 57 |
| 2011 | 21 | 71 |
| 2012 | 44 | 55 |
| 2013 | 30 | 75 |
| 2014 | 57 | 75 |
| 2015 | 25 | 91 |
| 2016 | 40 | 116 |
| 2017 | 74 | 126 |
| 2018 | 88 | 145 |
| 2019 | 123 | 98 |
| 2020 | 139 | 98 |
| 2021 | 90 | 62 |
| 2022 | 68 | 59 |
| 2023 | 73 | 91 |
| 2024 | 75 | 66 |
| 2025 | 47 | 55 |
| 2026 | 29 | 65 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water based coating composition for wind blades29 Sep 2026US 12,747,370 B2Hempel A/S
- Fan device with metal annular frame18 Aug 2026US 12,710,055 B2Cooler Master Co., Ltd.
- Bi-metal impeller rotor23 Jun 2026US 12,663,014 B1Pratt & Whitney Canada Corp.
- Centrifugal fan or compressor composite impeller with abrasion resistance16 Jun 2026US 12,655,851 B2Howden Turbo GmbH
- Fan component, fan, fan unit, air conditioner, heat pump device, and method for manufacturing fan component9 Jun 2026US 12,650,133 B2Daikin Industries, Ltd.
- Centrifugal fan or compressor composite impeller with abrasion resistance17 Sep 2026US 2026/0275998 A1Howden Turbo GmbH
- Systems and Methods for Thermal Spraying of Protective Materials onto Composite Laminates10 Sep 2026US 2026/0266304 A1
- Flow machine and method for producing a flow machine component guiding a flow medium27 Aug 2026US 2026/0251156 A1Ziehl-Abegg SE
- COOKING APPLIANCE (As Amended)27 Aug 2026US 2026/0251315 A1LG Electronics Inc.
- Propeller blade and method for repairing a propeller blade20 Aug 2026US 2026/0242053 A1RöDer PräZision GmbH
Most cited
By later US patents
- Compact low noise efficient blower for CPAP devices351US 7,866,944 B2ResMed Motor Technologies Inc. · 2011
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- Compressor149US 5,857,348 AMultistack International Limited · 1999
- Shaped cooling hole for an airfoil119US 6,368,060 B1General Electric Company · 2002
- Composite fan blade trailing edge reinforcement92US 5,785,498 AGeneral Electric Company · 1998